As governor of the Indiana Territory, William Henry Harrison between 1802 and 1811 made treaties with the Indians that added millions of acres of land to the United States. In 1809, Harrison concluded the Treaty of Fort Wayne with the Delaware, Potawatomi, and Miami leaders, granting about three million acres in tribal lands to the United States in return for $7,000 in goods and an annuity of $1,750. The Shawnee chief Tecumseh was furious. He formed a confederation and went south of the Ohio River to gain support from the southern tribes. Harrison took a militia of a thousand men and marched on the confederated Indian settlement of Prophetstown, founded by Tecumseh. In an effort to pre-empt the attack, Tenskwatawa (Tecumseh's brother) raided Harrison's camp on the Tippecanoe River during the battle, on November 7,1811. The Indians were defeated. Afterwards, finding Prophetstown abandoned, Harrison destroyed it. These events marked the beginning of the War of 1812 in the West.